EP 0754695 B1 20011107 - Chiral tertiary phosphanes and process for their preparation
Title (en)
Chiral tertiary phosphanes and process for their preparation
Title (de)
Chirale tertiäre Phosphane und Verfahren zu ihrer Herstellung
Title (fr)
Phosphates tertiaires chiraux et procédé pour leur préparation
Publication
Application
Priority
DE 19526464 A 19950720
Abstract (en)
[origin: EP0754695A1] Chiral t-diaryl alkyl phosphines of formula (I) are new: (R1)(Ar1)HC-P(Ar2)2 (I) where Ar1 and Ar2 = phenyl, naphthyl or anthracenyl, opt. substd. with one or more substituents chosen from 1-4 C alkyl, 1-4 C alkoxy, CF3 or F; and R1 = 1-4 C alkyl opt. substd. with F, CF3 or OCH3. The prepn. of (I) is also claimed, comprising the reaction of chiral quat. ammonium salts of formula (II) with diaryl phosphine salts (III): Ä(R1)(Ar1)HC-N<+>R2R3R4ÜX<-> (II) (Ar2)2P<->M<+> (III) where R2-R4 = 1-20 C alkyl; and M<+> is an (in)organic acid anion.
IPC 1-7
IPC 8 full level
B01J 31/24 (2006.01); C07F 9/50 (2006.01)
CPC (source: EP US)
C07F 9/5031 (2013.01 - EP US); C07F 9/5077 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0754695 A1 19970122; EP 0754695 B1 20011107; CA 2181664 A1 19970121; DE 19526464 C1 19970306; DE 59608111 D1 20011213; JP H09110889 A 19970428; US 5808163 A 19980915
DOCDB simple family (application)
EP 96111358 A 19960715; CA 2181664 A 19960719; DE 19526464 A 19950720; DE 59608111 T 19960715; JP 18958996 A 19960718; US 68047996 A 19960717